I have used the "5X8SHORTCABLE" that is the subject of this post, now available from Sennheiser for $13.47. After a few months, it became intermittent, requiring me to move the plastic plug that goes into my left earpiece to restore sound in one of the two sides of my HD 598 headphones.

For a while, I thought the problem was in the jack of the HD 598 headphone and was becoming resigned to having to buy a replacement pair of headphones. On a lark, I went back to the original 10' cable that came with the headphones to find there was no problem with ITS connection, indicating that the problem was in the cable.

Well, we'll see how it goes for me. I bought two cables, one for my Momentum On-ear and one for my K545 to replace the little strings that they originally came with. I think manufacturing tolerances might not be as tight for this cable as the stock HD598 cable fits my Momentum easily and locks firmly but this replacement cable, both of them, fit my Momentum very tight and cannot be turned in order to lock, but at least insertion is proper and the tightness secures the cable anyway, lol. I should have gotten a third one, reduced the 2.5mm plug body's outer circumference slightly with my solder iron or fine sandpaper, then it would fit my HD8 DJ. I knew ahead of time but when ordering I slipped my mind.